Sectional insulation for rail joints



' Patented Sept. 26, 1922.

2 SH TS-SHEET I. 4

alarkson ZD b C. A. DISBROW.

SECTIONAL INSULATION FOR RAIL JOINTS.

APPLICATION FILED JULY 21. 1921.

1,429,9 4, PatntedSept. 26, 1922.

2 SHEETSSHEET 2.

Patented Sept. 26, 1922.

nset.

OLARKSON A. DISBROXV, OF NEW YORK, N. Y., ASEiIGNOR TO THE RAIL JOINT COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SECTIONAL INSULATION FOR BAIL JOINTS.

Application filed July 21, 1921.

To all whom it may concern Be it known that I, CLARKsoN A. Dis- BROW, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvement in Sectional Insulations for Rail Joints, of which the following is a specification.

This invention relates to insulation for rail joints and has for its object'an improvement in the type of insulating unit covered by my former Patent No. 1,311,440, granted July 29, 1919. I

As pointed out in the former patent referredto, it is desirable in an insulated rail joint to conserve to as great an extent as possible, that part of the insulation which is subject to the least wear and which ordinarily will satisfactorily and safely function for a considerable period, and to effeet that economy by providing means whereby that part of the insulation receiving the greatest wear can be made of more durable material than the remainderof the insulation and also can be readily renewed and replaced without disturbing other parts.

To that end the present invention contemplates a simple and economical construction and arrangement of insulation for rail joints permitting the ready renewal and replacing of the part which becomes worn, by new or unworn pieces; also providing an arrangement whereby the parts or sections of the insulation may be inter changed to accomplish these results.

With this and other objects in view which will more readily appear as the nature of the invention is understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

Certain preferred and practical embodiments of the invention are shown in the accompanying drawings, in which- Figure 1 is a side elevation of the rail joint, with the splice bar removed to expose the improved insulating unit.

Figure 2 is a perspective view of the in sulatino unit shown in Figure 1.

Figure 3 is a similar perspective view showing the improvement applied to an other form of insulating unit.

Figure 1 also is a view like Figures 2 and 3 illustrating another variation ofthe invention.

Serial No. 286,519.

Figure 5 is a detailed perspective view illustrating a form of construction that may be used in making the central hard wear section of the insulation.

Figures 6 and '7 are perspective views illustrating sectional base insulation enibodying the features of the present inven tion.

Like reference characters designate similar parts in the several features of the drawings.

An insulating unit constructed in accordance with the present invention, primarily consists of a plurality of alined sections of insulation designated respectively by the different letters A, B and C. These sections of insulation are intended to be placed between the joint bar and the under side of the head of the rail as shown in Figure 1 of the drawings. and the sections of insulation B and C are respectively arranged under the heads of the opposite rails and are subjected to the least wear, while the section A of insulation, con- ,stitutes the centrally located hard wear section which crosses the joint and underlies the rail ends.

By reason of the location of the central section A of insulation that section is ne essarily subjected to the great wear and shock under the head of the receiving rail, to which the other parts of the insulation are not exposed. Therefore, the central section A of insulation may be made of harder and more durable material than the other sections of insulation in order that its life may be prolonged, but regardless of that, the use of a separate and independently removable and replacable hard wear section A of insulation, permits that section to be replaced by a new and unworn section whenever that is required for the proper maintenance of the joint.

It will be seen from Figure 2 of the drawings, that this form of the invention involves the use of head sections B and C of insulation-preferably having an interlocking engagement as at 1 with the bolts of the joint and is held against longitudinal displacement by the two end sections B and C.

The form ofconstruction shown in Figure 3 is in all essential features, as far as the present invention is concernechthe same as the form of construction shown in F igure 2, but in Figure 4 of the drawings, there is introduced another feature of the invention, viz: that of making the several sections of insulation duplicates so that they may be interchanged the conditions of the joint may require.

In Figure 5 of the drawings is suggested the feature of making the section of insulation of superposed pieces of metal and fibre 2 and 3 respectively To illustrate the range 01" modification that may be resorted to in carrying out the invention there is shown in Figures 6 and 7 of the drawings a sectional base insulation consisting of a plurality of alined sections designated respectively by the letters D, E and F, the section E of insulation being the intermediate section which is centrally located in the joint. In both of the forms of sectional base insulation shown in Figures (5 and 7, the sections of insulation have a form adapting them to be placed between the foot portion of the joint bar and the upper side of the rail flange and to extend upward along the web of the rail adjacent to the bolts. In a form, however, shown in Figure 7 of the drawings the intermediate section E of insulation is one that is provided with a short upstanding flange 6 which does not engage with the bolt.

From the foregoing it is thought that the the drawings that changes in the form and minor details of the construction may be resorted to without sacrificing the spirit and advantages of the invention.

I claim:

1. An insulating unit for rail joints comprising a plurality of alined sections, an intermediate section being adapted to be located at the centre of the joint.

2. An insulating unit for rail joints comprising a plurality of alined sections, said sections being independently removable and replaceable but held against longitudinal displacement by the adjacent sections.

3. An insulating unit for rail joints comprising end sections of insulation adapted to engage the heads of opposite rails in the joint, and a hard wear section of insulation interposed between the said two end sections and adapted to engage both rail ends at the centre of the joint.

An insulating unit for rail joints comprising end sections of insulation adapted to engage the heads of opposite rails in the joint, and a central section of insulation of harder material than and interposed between the said two end sections and adapted to engage both rail ends, the said sections of insulation being independently removable and replaceable.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

CLARKSON A. DISBROW.

Witnesses E. K. KnnsHNnR, KATHERINE MoNALLY. 

